Variable gravity research facility

Spin and despin requirements; sequence of activities required to assemble the Variable Gravity Research Facility (VGRF); power systems technology; life support; thermal control systems; emergencies; communication systems; space station applications; experimental activities; computer modeling and simulation of tether vibration; cost analysis; configuration of the crew compartments; and tether lengths and rotation speeds are discussed

Synthesis of benzoxazoles <i>via</i> a silver mediated oxidation

A silver carbonate-based method to synthesize benzoxazoles from imines has been developed. The reaction is extremely mild, tolerates several heterocycles and functional groups, and provides highly functionalized benzoxazoles in modest to good yields. The reaction proceeds in an array of solvents and atmospheric conditions, demonstrating the robustness of this oxidation method and its ability to provide an alternative method for the easy preparation and isolation of these bioactive compounds.</p